Combination-lock



(No Model.)

H. D. CHIPMAN.

COMBINATION LOOK.

No. 590,131. Patented Sept. 14,1897.

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ATENT FFTQE COMBINATION-LOCK.

SPECIFICATION forming part of Letters Patent No. 590,131, datedSeptember 14, 1897. Application filed March 16,1897. Serial No. 627,806.(No model.)

To all whom it may concern.-

Be it known that I, HORACE D. CHIPMAN, residing at Home City, in thecounty of Hamilton and State of Ohio, have invented certain new anduseful Improvements in Combination-Locks, of which the following is aspecification.

This invention relates to a combinationlock adapted to be usedon doors,desks, drawers, (to, which is operated by a crank, on the shaft of whichthe tumblers are mounted. Said shaft also carries a notched disk withnotches corresponding, preferably, to the dial of a clock, a part of thenotchese-say 12, 3, 6, and 9being deeper than the others, and having anindicator engaging with said notches, so that the operator by the senseof feeling can run the combination. The crankshaft is so combined withthe lock-bolt that the bolt can be thrown by the crank when the tumblersare brought into position for shooting the bolt, andwhenthe bolt hasbeen thrown by the crank movement a releasing of the crank willinstantly throw out the combination, so that the lock worksautomatically or is self-setting.

Another object of my invention is to so arrange the tumblers on aseparable shaft that they can be easily removed through the back 0f thelock or through a section of the lock for resetting the combination.

Another object of my invention is to so construct the locking mechanismthat when set in a certain position thelo'ck can be operated by a key ina keywayof the crank-shaft as well as by the combination. The working ofthe key is independent of the combination and does not disturb it.

Another object of my invention is to provide a lock which, when a numberare to be used in a series, as in a school-room, can be operated by a'single key, at the same time allowing each lock to have a combinationdif-.

set forth in the description of the accompanying drawings, making a partof this specification, in which- Figure 1 is an inside View of the frontplate of the lock. Fig. 2 is a section on line w 00, Fig. 1. Fig. 3 is afront view of the face-plate of the lock. Fig. 4 is a plan View of thelock with the back plateremoved. Fig. 5 is a central section on line 3 1Fig. 4. Fig. 6 is a plan view of the lock with the back plate andtumblers removed. Fig. 7 is a detailedview of the dog, engaging with thenotches of the tumblers. Fig. 8 is a perspective view of thesliding-bolt frame; Fig. 9 is a perspective view of the automaiicsettingde'vice. j

A represents the framework'of a door or other structure to which my lockis attached,

B represents the front plate.

0 represents the back 1) represents the bolt. 7 i

E represents the tumbler-shaft, upon which are mounted the tumblers a b0 cl. These are constructed in the ordinary manner.

F represents a dial-plate provided with a series of notches e f aroundits periphery. Notches f are deeper than notches e andare placed,preferably, in positions corresponding to the figures 12,3,6, and 9 ofthe dialof a clock, notches 6 being intermediate. 1 Of course theplacing of the deep notches issomewhat arbitrary and more or less. maybe employed, serving to indicate the locationiof the other notches andto assist the operator inworking the combination. f I l 9 represents anarm carrying a roller or friction-wheel g, which travels on the periphery of the dial and engageswi'th said notches. g represents a spring forholding the said friction-ro1ler in easy contact with the notches.

plate of the lock.

G represents a dog engaging with the notches of the tumblers when theyare brought in line with each other. It is held in contact with theperiphery of thetumblers by spring G. V

In order to shoot the bolts by the crankrnovement which operates thetumblers, the last tumbler is provided with a notch h, having a squareshoulder at the rear edge of its line of travel when coming intoposition. The other three tumblers are provided with the squareshoulders on the front edges of their notches i, as shown in Fig. 4. Bythis means ICO when the tumblers have been brought into position and thedog G has fallen into the notches a reverse movement of the crank bringsthe square shoulder of notch h in firm contact with the dog and shootsthe bolt in the following manner: Dog G is pivoted upon the sliding-lockframe H, which is provided with a lug I, which engages with a lug J onthe lock-bolt D, so that the movement of the crank and tumblers willretract the bolt.

In order that the lock may automatically set itself as soon as the boltis retracted and the crank released, I provide the following devices: Krepresents a plate, which is provided with a lug 70. When the dog 3rslips into the tumbler-notches and is retracted, lug G strikes the innerinclined face of the lug 7c and turns the plate K on its pivot Springdepresses the plate as soon as the dog has passed in rear of the lug,and when the bolt D is projected bythe spring D the dog G will slideover the outer face of lug 7c and drop in front of it, bringing dog Ginto engagement with the peripheries of the tumblers, which will rest onthe tumblers in front of the notches i, so that the tumblers will haveto be operated to bring the notches in line before the dog will reengagewith the notches of the tumblers. Lug is also serves to lock dog Gagainst retraction, except when it rests in the tumbler-notches.

In order that the bolt may be operated by a key, I provide the followingdevices: L represents a slot through the axis of the crank M. Thecrank-shaft E is provided with a slot or keyway I. N represents a notchin the sliding-lock frame II, with which the ward of the key engages andretracts the same, drawing back with it the bolt D. The key also movesthe plate K and lug it out of the path of lug G thus operating withoutaffectin g the combination. It will be observed that the keyway in theshaft E must be in such relation to the lug N of the sliding-bolt framethat the ward of the key will engage with the same in turning and throwthe bolt.

In order that the tumblers may be removed through the back plate of thelock or a section thereof, I provide the following instrumentalities: 0represents acoil-spring,which rests between the back plate of the lockand the back plate 0 of the tumbler-frame. The tumblers are supported ona sleeve P, which is made integral with the tumbler-frame. Thecrank-shaft E loosely fits in said sleeve,so that the tumbler-frame andthe tumblers journaled therein may be detached by removing the backplate 0 and the spring 0, and the combination can readily be changedwithout disturbing any part of the locking mechanism. Q represents aspring engaging with the pin Q on the bolt-frame II for retracting thesame.

In order that the dog G may be held out of the way for detaching thetumblers, I provide the following mechanisms: R represents a detentwhich is operated through the slot R of the look by pin 1* turning onthe pivot r. S represents a catch which engages with the lug S on thelock-bolt and holds the look back, the dog G being in the position shownin Fig. 6. The catch t on said dog engages with the catch 19 on thebolt, thus holding the dog out of the way.

Then the lock is to be used on a door and it is desired to open the doorfrom the inside without the use of a key, I provide the followingmechanism: U represents a tumbler provided with a finger V, projectingupward and engaging with the lug IV on the bolt.

X represents asocket-bolt resting in the tumbler U for turning the sameupon the inside of the door by the thumb-piece Z in the ordinary mannerof operating a night-latch.

I thus provide a combination-lock which has all the conveniences of anordinary outside door-lock which may be operated readily by thecombination from the outside and which may be thrown out of use wheneverdesired.

Having described in y invention, what I claim is 1. In apermutation-lock, the combination with the bolt and a sliding-lock frameadapted to be engaged and actuated by a key, of a series of tumblers, atumbler-frame detachably connected with the lock mechanism and havingintegral with said frame a sleeve upon which said tumblers are mounted,and a shaft loosely fitted into said sleeve and provided with a handleand a keyway, substantially as described.

2. In a permutation-lock, the combination with the bolt, a series oftumblers, and a sliding-lock frame,of a detachable tumbler-frame havingintegral therewith a sleeve on which said tumblers are mounted, dogmechanism pivoted on the said sliding-lock frame to engage the tumblers,and a shaft fitted into the tumbler-sleeve and provided with acrankhandle, substantially as described.

3. In combination with a permutation-lock having a series of tumblersmounted upon a shaft, the sliding-bolt frame, the dog pivoted thereon,and engaging with the setting-plate K, for raising the dog and passingit over the notches for automatically resetting the combinationsubstantially as specified.

4. In a permutation-lock the combination of a series of tumblers mountedupona shaft, a sliding-lock frame, a dog pivoted thereon, theresetting-plate K, the independent lockbolt D and means for theengagement of the lock with the bolt, substantially as specified.

5. In a permutation-lock, the combination with the bolt, andasliding-lock frame, of a series of tumblers mounted upon a sleeve thatis integral with a detachable tumblerframe, and a detachable shaftfitted into said sleeve and provided with a crank, substantially asdescribed.

6. In a permutation-lock, the combination with the bolt and asliding-lock frame adapted to be engaged and actuated by a key, of aseries of tumblers, a dog pivoted to the sliding-lock frame to engagethe said tumblers for actuating the look through the same, and atumbler-shaft provided with a keyway for insertion of a key to engagethe sliding-lock frame and actuate the lock independent of the saidtumblers, substantially as described.

7. In a permutation-look, the combination with the series of tumblers,and a sleeve on which said tumblers are mounted, of the crankshaftfitted into said sleeve and provided with a dial-plate having a seriesof deep and shallow notches, and a pivoted arm in frictional engagementWith the periphery and notches of said dial-plate, substantially asdescribed.

8. In a permutation-lock, having a series of tumblers operated by acrank-shaft engaging with a dog of the sliding-lock frame, a key- Wayformed in said shaft and a notch in the sliding-bolt mechanism adaptedto engage with a key inserted in said keyway, substantially asspecified.

9. In a permutationdock, the combination with the bolt, the sliding-lockframe, and a dog pivoted to said lock-frame, of a tumblerframe having asleeve integral therewith, a series of tumblers mounted on said sleeveand provided with notches 7t 2' to be engaged by the dog on thesliding-lock frame, and a crank shaft fitted in the said sleeve thatsupports the tumblers, substantially as described.

10. In a combination-lock having a series of tumblers operated on ashaft, a dog engaging With the notch of said tumbler and pivoted uponthe sliding-bolt mechanism adapted to engage With the bolt D When thebolt is retracted and a locking-arm R for holding said bolt and dog inposition for removing the tumblers, substantially as specified.

11. In a combination-lock havinga series of notched tumblers mountedupon an operating-shaft, a sliding-lock frame, a dog pivoted upon saidlock-frame, the lock-bolt D having a movement independent of saidlock-frame, a tumbler U having an engagement with the lock-bolt D andmeans for operating said bolt independent of the tumbler-shaft,substantially as specified.

In testimony whereof I have hereunto set 50 \Vitnesses:

W. R. Woon, OLIVER KAISER.

